Trailer Life Magazine Open Roads Forum: Tech Issues: affordable battery tester
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > affordable battery tester

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next
Sponsored By:
dtappy3353

Oregon

Senior Member

Joined: 07/12/2013

View Profile



Good Sam RV Club Member

Offline
Posted: 02/12/18 12:17pm Link  |  Quote  |  Print  |  Notify Moderator

I understand percentage better than volts. Is there a battery tester that gives you percentage to help me understand the available charge of my batteries on Fiver.

2oldman

Orland

Senior Member

Joined: 04/15/2001

View Profile


Offline
Posted: 02/12/18 12:31pm Link  |  Quote  |  Print  |  Notify Moderator

What's the problem with voltage? It's a common and reliable indication of remaining capacity on LA batteries. I would think a battery tester (not a hydrometer) would use voltage.

LittleBill

Scranton, PA USA

Senior Member

Joined: 08/29/2003

View Profile


Offline
Posted: 02/12/18 12:32pm Link  |  Quote  |  Print  |  Notify Moderator

clicky





Old-Biscuit

Verde Valley

Senior Member

Joined: 06/20/2009

View Profile



Posted: 02/12/18 12:40pm Link  |  Quote  |  Print  |  Notify Moderator

Percentages/Voltages/Recommendations----all in one chart

[image]


Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
On the Road Debt Free April '07
Off the road still Debt Free Jan. '14

time2roll

Southern California

Senior Member

Joined: 03/21/2005

View Profile



Good Sam RV Club Member


Posted: 02/12/18 12:49pm Link  |  Quote  |  Print  |  Notify Moderator

dtappy3353 wrote:

I understand percentage better than volts. Is there a battery tester that gives you percentage to help me understand the available charge of my batteries on Fiver.
Do you want to test for diminished total capacity?
Or do you want to monitor the existing charge level?

For diminished capacity you may need a load tester to be used in conjunction with a hydrometer.

If you want a monitor to show a percentage of remaining charge there are many available for about $200+. Victron and Trimetric are two of the popular brands.

http://www.bestconverter.com/TriMetric-Battery-Monitor

http://shop.pkys.com/Victron-Energy-BMV700-Precision-Battery-Monitor


2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up

dtappy3353

Oregon

Senior Member

Joined: 07/12/2013

View Profile



Good Sam RV Club Member

Offline
Posted: 02/12/18 01:26pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the quick responses. Thank you very much for the charts...they are the paper version of what I'm seeking.

Looking for a hand held battery tester which give volts and "state of charge".

Ski Pro 3

Placerville, CA

Senior Member

Joined: 06/15/2012

View Profile



Posted: 02/12/18 01:27pm Link  |  Quote  |  Print  |  Notify Moderator

I bought one of these;
[emoticon]sNz_Ko6X9OlmwwnCn2IGLQ" >https://www.ebay.com/itm/DC-Battery-120V........ alt="[emoticon]">sNz_Ko6X9OlmwwnCn2IGLQ

A little thinking to set up, but man, it will tell you everything you need to know on the state of charge for the battery and it's over all condition.

[image]


2006 Dodge Ram 4x4 crew cab w/diesel and manual tranny.
2012 Lance 855S camper

Sam Spade

North Central Florida

Senior Member

Joined: 11/05/2015

View Profile


Offline
Posted: 02/12/18 03:28pm Link  |  Quote  |  Print  |  Notify Moderator

dtappy3353 wrote:


Looking for a hand held battery tester which give volts and "state of charge".


Don't make this harder than it IS.

Just print out a half dozen copies of that chart in the previous post, buy yourself an inexpensive digital multi-meter or two......and you are done.


'07 Damon Outlaw 3611
CanAm Spyder in the "trunk"

Almot

out there

Senior Member

Joined: 03/02/2010

View Profile


Offline
Posted: 02/12/18 06:17pm Link  |  Quote  |  Print  |  Notify Moderator

dtappy3353 wrote:

Thank you very much for the charts...they are the paper version of what I'm seeking.

Looking for a hand held battery tester which give volts and "state of charge".

Handhelds are for checking things occasionally, when you suspect that something could be wrong. Get a reliable multimeter to measure volts and consult the chart. It will tell the correct charge only after battery had rested 12-24 hours. You need a good multimeter anyway.

Voltage by itself is a very approximate measure of charge, cheap digital voltmeters are often inaccurate, the net result might be no better than OEM lights panel Full/Half/Empty. If it reads both volts and % of charge, then both volts and % will be inaccurate, be it a handheld or permanently installed.

For accurate on-the-go data, install battery monitors like those in Time2roll links. They measure not just volts, but also amper-hours in and out, and calculate the remaining charge.
If money is a problem, here is a cheaper device for the same purpose: Drok AH meter. Reads volts, remaining AH, and % of charge. Drok is more-less known brand. Ebay sell knock-offs that look similar, can't comment on those.

red31

Bryan

Senior Member

Joined: 08/04/2008

View Profile


Offline
Posted: 02/12/18 06:45pm Link  |  Quote  |  Print  |  Notify Moderator

dtappy3353 wrote:

Looking for a hand held battery tester which give volts and "state of charge".


Accurate SoC:

While being discharged at some unknown rate?
While being charged at some unknown rate?

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 3  
Next

Open Roads Forum  >  Tech Issues

 > affordable battery tester
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2018 CWI, Inc. © 2018 Good Sam Enterprises, LLC. All Rights Reserved. | Terms of Use | PRIVACY POLICY | YOUR PRIVACY RIGHTS